Explanation:

Policy type: App protection policy Minimum number of policies: 1 Comprehensive Explanation of Correct Answer Only: The correct answer is app protection policy because it allows you to customize the settings of apps for iOS/iPadOS or Android devices1. One of the settings you can configure is Restrict cut, copy, and paste between other apps, which lets you prevent users from copying data from App1 and pasting the data into other apps2. You only need one policy to apply this setting to all devices that have App1 installed1.
References: 1: App configuration policies for Microsoft Intune | Microsoft Learn
https://learn.microsoft.com/en-us/mem/intune/apps/app-configuration-policies-overview 2: Troubleshoot restricting cut, copy, and paste between applications - Intune | Microsoft Learn
https://learn.microsoft.com/en-us/troubleshoot/mem/intune/app-protection-policies/troubleshoot-cut-copy-paste